Originally Posted By: gpshumway
Your G is heavy because it's a luxury car, not because it's new. It's slathered with copious amounts of heavy sound deadening material.
No, you're absolutely right about that. I didn't mean it's heavy just because it's new, or just because of safety standards. People do want things quiet and so forth. It's interesting to note that the Town Car I owned was the quietest car of that model year, and held that title for some time.
It still is jarring, however, for a car the physical size of a G coupe to be that close in weight to a Town Car.
With respect to fuel economy, I certainly don't drive the G that hard, but I didn't tell the complete picture, either. Under my "normal" driving patterns, they're both pretty close. However, if I put my foot into either of them, the Town Car's MPGs would drop significantly more than would the G's, and the G has a lot more power to play with. If I drove the Town Car at higher than normal highway speeds, I noticed it on the fuel gauge (and wallet) for sure. If I drove it in the city with an attempt to get acceleration anywhere approaching what would be considered leisurely in my G, the fuel economy would take a mammoth hit.
Basically, on a leisurely highway cruise, fuel mileage was fairly similar between the two vehicles (and the Audi was in a similar ballpark). I just expected more out of the G in such a scenario. But, the penalty for flogging the vehicles was much higher in the Town Car.
Now, if you want a noisy vehicle, try my F-150. There's no headliner, no hood lining material, virtually nothing in the doors, and some rather aging, cracked weatherstripping.
And if you flog it, you will pay for it at the pumps.
The Lightning was a bit of an oddball when it came to fuel economy, particularly in comparison to something like the Town Car. If you did a highway trip at 100 km/h in the Town Car and tried the same trip at 130 km/h, the fuel economy would suffer, very significantly. I did enough regular, long highway trips in the car that it definitely paid to be at or below the speed limit. In the Lightning, the difference was minuscule enough that it could be almost confused with statistical noise.